EP2831434A1 - Support pour un palier sphérique - Google Patents
Support pour un palier sphériqueInfo
- Publication number
- EP2831434A1 EP2831434A1 EP12713056.5A EP12713056A EP2831434A1 EP 2831434 A1 EP2831434 A1 EP 2831434A1 EP 12713056 A EP12713056 A EP 12713056A EP 2831434 A1 EP2831434 A1 EP 2831434A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- spherical bearing
- annular ring
- axial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0614—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part of the joint being open on two sides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0666—Sealing means between the socket and the inner member shaft
- F16C11/0671—Sealing means between the socket and the inner member shaft allowing operative relative movement of joint parts due to flexing of the sealing means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/30—Angles, e.g. inclinations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
Definitions
- the present invention relates generally to a support for a spherical bearing and, more particularly, to a support having a conical inside surface.
- Spherical plain bearings have been devised for the purpose of accommodating misalignment
- These types of bearings have spherical contact surfaces which allow an inner race to rotate with multiple degrees of freedom while positioned within an outer race. This freedom of movement capability allows this type of bearing to self-align such that it automatically adjusts to misalignment which may occur due to the application of loading forces, machining tolerances, welding distortions, or mounting deformations due to static and dynamic forces.
- Spherical plain bearings can be used where oscillating, tilting, or skewing movements must be permitted.
- the present invention is directed to a support for a spherical bearing.
- the support includes a substantially annular ring defining an axial facing abutment surface and an inside surface.
- the inside surface is sloped radially outward toward the abutment surface.
- the annular ring has an outer circumferential surface that has a locking mechanism thereon.
- the support can be secured substantially between axial ends of the spherical bearing. The support limits axial movement of an inner race of the spherical bearing.
- the present invention is directed to a spherical bearing including an inner race having a substantially spherical outer surface and an outer race positioned around the inner race.
- the outer race has a substantially spherical inner surface.
- the outer race includes a pocket defined by a conical outer surface and an axial shoulder.
- a support is removably disposed in the pocket The support is positioned between axial ends of the spherical bearing.
- the support is a substantially annular ring defining an axial facing abutment surface and an inside surface. The inside surface is sloped radially outward toward the abutment surface.
- the annular ring defines an outer circumferential surface having a locking mechanism thereon.
- the locking mechanism includes screw threads.
- the abutment surface engages the axial shoulder and the inside surface engages the conical outer surface. Hie support limits axial movement of the inner race relative to the outer race.
- the annular ring has an axial width of about 10 to 20 percent of an axial width of the spherical bearing.
- FIG. 1 is a cross sectional view of a support for a spherical bearing
- FIG.2 is a cross sectional view of the support of FIG. 1 mounted on a spherical bearing
- FIG. 3 is a partial cross sectional view of the support of FIG. 1 shown at an initial stage of installation in the spherical bearing;
- FIG.4 is a partial cross sectional view of the support of FIG. 1 shown at an intermediate stage of installation in the spherical bearing;
- FIG. 5 is a partial cross sectional view of another support shown at an initial stage of installation in the spherical bearing.
- a support for a spherical bearing is generally designated by the numeral 10.
- the support 10 is defined by a substantially annular ring 12 having an axial facing abutment surface 14 on one end thereof.
- the annular ring 12 has an inside surface 16 that is sloped radially outward toward the abutment surface 14.
- the support 10 has a locking mechanism 18, such a threaded area 18A on an outer circumferential surface 20 of the support In one embodiment, the threaded area 18A is a male screw thread.
- the support 10 is operable to be secured substantially between axial ends of a spherical bearing 22 as described below.
- the support 10 limits axial movement of an inner race defined by the spherical bearing 22, as detailed below.
- locating the threaded area 18A on the outer circumferential surface 20 enables the support 10 to acquire a fatigue resistant, compressed state when installed in the spherical bearing and body, as described below.
- title support 10 is disposed in a spherical bearing 22.
- the spherical bearing 22 is defined by an inner race 24, for example a ball, having a substantially spherical outer surface 26.
- the spherical bearing 22 includes an outer race 28 positioned around the inner race 24 and having a substantially spherical inner surface 30.
- the outer race 28 has a pocket 32 formed in an end 34 thereof The pocket 32 is defined by a conical outer surface 36 and an axial facing shoulder 38.
- the support 10 is threaded into a body 40 having internal threads 42 to secure the support 10 and the spherical bearing 22 in the body 40.
- the support 10 is removably positioned in the pocket 32 so that the threaded area 18 A of the support engages the internal threads 42 of the body 40.
- the abutment surface 14 of the annular ring 12 seats on the shoulder 38 to secure the outer race 28 to the body 40.
- the sloped inside surface 16 of the annular ring 12 engages the conical outer surface 36.
- the abutment surface 14, the sloped inside surface 16 and the threaded area 18 are in a fatigue resistant compressed state when the support is installed in the pocket 32.
- the support 10 is described as being threaded into the pocket 32, the present invention is not limited in this regard as the support can be press fit into the pocket and secured in place by suitable fasteners, welding and/or adhesives.
- the abutment surface 14 is shown and described as seating on the shoulder 38, the present invention is not limited in this regard as the abutment surface 14 and the shoulder 38 may be spaced apart from one another and the support 10 is secured in the pocket 32 by the threads 42 and the threaded area 18A and the engagement between the conical outer surface 36 and the sloped inside surface 16.
- the outer race 28 has a first end 44 defining a first opening ISA having first radius Rl and a second end 46 defining a larger second opening 1 SB having a second radius R2.
- the inner race 24 has a maximum radius R3 that is greater than the first radius Rl and the second radius R2.
- the second opening 1SB is sized to receive the inner race 24 by temporarily expanding the second opening during assembly.
- the first end 44 has a thickness Tl and the second end 46 has a thickness T2 that is less than the thickness Tl.
- the support 10 is disposed in the pocket 32 located proximate the second end.
- the support 10 is shown and described as being positioned in the pocket 32 located proximate the second end, the present invention is not limited in mis regard as another support can be employed in a pocket located proximate me first end.
- the outer race 28 has a first width Wl and the inner race 24 has a second width W2.
- the second width W2 is greater that the first width Wl.
- the support 10 has an axial width W3 that is sized so that the support is positioned in the pocket 32, inboard of opposing ends of the axial ends of the inner race 24.
- the axial width W3 of the support 10 is about 10 to 20 percent of the width W2 of the inner race 24.
- a second surface 48 of the support 10 opposite the abutment surface 14 is substantially coplanar with the second end 46 of the outer race 28.
- the inside surface 16 of the annular ring 12 has a minimum inside diameter Dl at a first point SO located a distance of about 70 to 85 percent of the width W3 from the abutment surface 14.
- the annular ring 12 has a second diameter D2 at a second point 52 which is coplanar with the abutment surface 14.
- the diameter D2 is greater than the diameter Dl .
- the inside surface 1 is sloped radially outward from the point 50 to point 52 at an angle A of about 8 degrees relative to a longitudinal reference line L.
- the conical outer surface 36 of the pocket 32 is sloped radially inward from a third point 54 defined by the intersection of the conical surface and the shoulder 38 to a fourth point 56 located at a distal edge of the conical surface.
- the conical surface 36 slopes radially inward from the third point 54 to the fourth point 56 by an angle B of about 8 degrees relative to the longitudinal reference line LI.
- angles A and B are shown and described as being about 8 degrees, the present invention is not limited in this regard as angles A and B may have other magnitudes, including but not limited to the angle A being greater than the angle B; the angle A being from about zero to about 20 degrees and the angle 6 being from about zero to about 20 degrees; and the angle A being from about six to about 10 degrees and the angle B being from about six to about 10 degrees.
- a lip 60 extends axially from the annular ring 12 at the point 50 and is curved radially outward to form an annular channel 62 for receiving an annular seal 63.
- One end 64 of the seal 63 is seated in the channel 62 and an Opposing end 66 of the seal is seated in a groove 68 formed in the inner race 24.
- the seal 63 prevents debris from entering an area between the spherical outer surface 26 and the spherical inner surface 30.
- another seal 70 is located proximate the first end 44 and extends between the outer race 28 and the inner race 24.
- the annular ring 12 includes a plurality of axial bores
- the bores 72 are configured to receive a tool (not shown) for applying torque to the annular ring 12 (hiring assembly and disassembly.
- the support 110 and bearing 122 illustrated in FIG. 5 are similar to the support 10 and bearing 22 shown in FIGS. 1-4. Accordingly, similar elements are designated with similar element numbers preceded by the numeral 1.
- the support 110 is illustrated having an internal threaded area 118A and a conical outer surface 116.
- the outer race 128 defines a pocket 132 with an outwardly facing male threaded area 142.
- the body 140 defines an inwardly facing conical surface 136.
- the conical outer surface 116 defines an angle A relative to a reference line L.
- the inwardly facing conical surface 136 defines an angle B relative to a reference line LI .
- the angle A is about 8 degrees and about equal to the angle B. In one embodiment, the angle A is greater than the angle B before the support 110 is installed in the pocket 132.
- the support 110 is installed into the pocket 132 similar to that described above for the support 10.
- the support 10 is manufactured from a material different from that which the inner race 24 and/or the outer race 28 are manufactured. In one embodiment, the support 10 is manufactured from a material suitable for dampening vibrations transmitted between the inner race 24 and the outer race 28.
- the annular ring 12 is threaded into the body 40 causing the annular ring to move into the pocket 32 in the general direction indicated by the arrow F.
- the inside surface 16 slidingly engages the conical outer surface 36 until the abutment surface 14 engages the shoulder 38.
- the annular ring 12 generates a radially directed force as indicated by the arrows H which limits outward radial movement of the second end 46 of the outer race 28.
- the inner race 24 tends to urge the second end 46 of the outer race 28 outward in the general direction indicated by the arrow R.
- annular ring 12 is wedged into the pocket 32 to limit axial movement of title inner race 24 relative to the outer race 28.
- the annular ring 12 limits outward radial movement of the second end 46 of the outer race 28.
- the wedging of the annular ring 12 into the pocket 32 compresses the annular ring, the shoulder 38 and the conical outer surface 36 for resistance to fatigue.
- the wedging of the annular ring 12 into the pocket causes the abutment surface 14, the sloped inside surface 16 and the threaded area 18 A to acquire a fatigue resistant compressed state when the support is installed in the pocket 32.
- the support 10 is resistant to fatigue failure caused cyclic stresses imparted on the spherical bearing during operation.
- the wedging of the support 10 into the pocket 32 prevents the threads 42 and the threaded area 18 from inadvertently unscrewing from one another, thereby establishing a self locking configuration of the support in the pocket
- the wedging of the support 10 into the pocket causes the outer race 28 to be cold formed around the inner race 24.
- adjustment of the support 10 in the pocket 32 affects the break-away torque required to cause movement between the inner race 24 and the outer race 28. For example, the magnitude of the break-away torque increases as the support 10 is screwed or otherwise forced into the pocket 32.
- the angle A is greater than the angle B when the support 10 is in an initial stage of installation (FIG. 3).
- a leading edge 16A of the inside surface 16 engages a leading edge 36A of the conical outer surface 36.
- the support 10 is threaded partially into the pocket 32.
- the inside surface 16 engages the conical outer surface 36 and the leading edge 16A is positioned between the second end 46 of the outer race 28 and the axial facing shoulder 38.
- the support is wedged between the outer race 28 and the body 40.
- the inside surface 16A of the support and/or the conical outer surface 36 of the outer race 28 conform such that the angle A and the angle B are substantially equal.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of The Bearing (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2012/055484 WO2013143582A1 (fr) | 2012-03-28 | 2012-03-28 | Support pour un palier sphérique |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2831434A1 true EP2831434A1 (fr) | 2015-02-04 |
EP2831434B1 EP2831434B1 (fr) | 2018-07-18 |
Family
ID=45937301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12713056.5A Active EP2831434B1 (fr) | 2012-03-28 | 2012-03-28 | Palier sphérique comprenant un support |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2831434B1 (fr) |
WO (1) | WO2013143582A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2583011A (en) * | 2019-03-18 | 2020-10-14 | Skf Aerospace France Sas | Connection element, and method for producing a ring for such a connection element |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2905485B1 (fr) * | 2014-02-07 | 2020-12-30 | Schaublin SA | Joint d'étanchéité et système d'ancrage pour des paliers rotulants |
EP2905486B1 (fr) * | 2014-02-11 | 2019-05-29 | Roller Bearing Company of America, Inc. | Ensemble de palier serti avec une bride montée sur celui-ci |
US10393179B2 (en) | 2014-10-01 | 2019-08-27 | Schaublin Sa | Segmented outer ring for a bearing for mitigating torque degradation |
DE102015211005A1 (de) * | 2015-06-16 | 2016-12-22 | Zf Friedrichshafen Ag | Kugelgelenk |
DE202017101399U1 (de) | 2017-03-10 | 2017-03-30 | HÜBNER GmbH & Co. KG | Sphärisches Lager als Verbindung zwischen zwei Fahrzeugen oder Fahrzeugteilen |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4338916C1 (de) * | 1993-11-15 | 1995-05-04 | Trw Fahrwerksyst Gmbh & Co | Kugelgelenk |
US5824108A (en) * | 1997-03-26 | 1998-10-20 | Johnson & Johnson Professional, Inc. | Bipolar acetabular cup |
FR2796110B1 (fr) * | 1999-07-09 | 2001-10-12 | Sarma | Rotule d'articulation et procede de fabrication d'une telle rotule |
DE19952427A1 (de) * | 1999-10-30 | 2001-05-03 | Audi Ag | Kugelgelenk |
JP2001193734A (ja) * | 2000-01-05 | 2001-07-17 | Minebea Co Ltd | 球面滑り軸受の固定方法 |
KR100743577B1 (ko) * | 2004-09-07 | 2007-07-30 | 주식회사 썬 프레인 코 | 가스스프링의 볼조인트 체결 구조 |
-
2012
- 2012-03-28 WO PCT/EP2012/055484 patent/WO2013143582A1/fr active Application Filing
- 2012-03-28 EP EP12713056.5A patent/EP2831434B1/fr active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2013143582A1 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2583011A (en) * | 2019-03-18 | 2020-10-14 | Skf Aerospace France Sas | Connection element, and method for producing a ring for such a connection element |
US11047422B2 (en) | 2019-03-18 | 2021-06-29 | SKF Aerospace France S.A.S | Connection element, and method for producing a ring for such a connection element |
GB2583011B (en) * | 2019-03-18 | 2023-02-01 | Skf Aerospace France Sas | Connection element, and method for producing a ring for such a connection element |
Also Published As
Publication number | Publication date |
---|---|
EP2831434B1 (fr) | 2018-07-18 |
WO2013143582A1 (fr) | 2013-10-03 |
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